root cap


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root cap

n. Botany
A thimble-shaped mass of cells that covers and protects the root tip.

root cap

a structure found at the apex of all ROOTS (except those of many water plants), produced by the APICAL MERISTEM. The cap consists of a thimble-shaped collection of PARENCHYMA cells which have a protective function. As the root pushes its way through the soil the outer (older) cells of the root cap are sloughed off and replaced by new cells from the MERISTEM.
References in periodicals archive ?
However, root caps were heavily colonised by bacteria, and contact points with remnant roots had more filamentous bacteria than other regions.
An ultrastructural study of the inhibition of mucilage secretion in the wheat root cap by aluminium, Pp 779-787 in Plant-soil interactions at low pH (R.
The root cap is located at the tip of the root and consists of several layers of cells that protect the root as it grows through the soil.
However, the growth of root part was more inhibited by the extract, showing root cap necrosis, early secondary root formation, gravitropic inversion and atrophy in all weeds.
In the root cap cells, Golgi bodies are sensitive to aluminum.
Ryan PR, Ditomoso JM, Kochian LV (1993) Aluminum toxicity in roots: an investigation of spatial sensitivity and the role of the root cap.
In general, root caps of many plants are not colonized by bacteria (Foster & Bowen, 1982).
1A) were examined and photographed in root cap (1), outer quiescent center (QC) cells (2), and inner QC cells (3) (Fig.
Greaves & Darbyshire, 1972; Oades, 1978; Foster, 1982) as has the secretion from root cap cells (see Rougier, 1981; Rougier & Chaboud, 1985).
We developed a bioassay that has allowed us to determine that chemical compounds exuding from the host's roots, root caps, and root border cells induce fungal hyphal branching," Nagahashi explains.